Display device having a blocking part covering sensing wirings

ABSTRACT

A display device includes: a display panel; and an input sensor disposed on the display panel, wherein the input sensor includes: a plurality of sensing electrodes; a plurality of sensing wirings electrically connected to the plurality of sensing electrodes, respectively; and a conductive part covering the plurality of sensing wirings, wherein the conductive part is configured to be floated or to receive a substantially constant voltage, and wherein the conductive part has a single, contiguous shape.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a Continuation of U.S. patent application Ser. No.17/172,062, filed on Feb. 9, 2021, which claims priority from and thebenefit of Korean Patent Application No. 10-2020-0044861, filed on Apr.13, 2020, each of which is hereby incorporated by reference for allpurposes as if fully set forth herein.

BACKGROUND Field

Implementations of the invention relate generally to a display deviceand, more specifically, to an input sensor included in the displaydevice having a blocking member to improve sensing reliability.

Discussion of the Background

Electronic devices such as a smartphone, a tablet, a laptop computer,and a smart television are being developed. These electronic devicesinclude a display device for providing information.

Recently, display devices may include an input sensor capable ofinteracting with a user in addition to displaying an image through adisplay panel. The input sensor determines whether an object touches ascreen and its touch coordinates when a user contacts or approaches thescreen using his/her finger, a sensing pen, etc. The display devices mayreceive an image signal based on the touch coordinates.

The above information disclosed in this Background section is only forunderstanding of the background of the inventive concepts, and,therefore, it may contain information that does not constitute priorart.

SUMMARY

Applicant realized that an electric field between an input device (e.g.,a sensing pen) and sensing wirings in the input senor can distortsignals transmitted through the sensing wirings.

Display devices constructed according to the principles and embodimentsof the invention are capable of improving sensing reliability of aninput sensor included in the display panel by having a blocking partdisposed on the sensing wirings to prevent an electric field from beinggenerated between the input device and the sensing wirings. Further, theblocking part can also prevent a signal transmitted through the sensingwirings from being distorted by the input device.

Additional features of the inventive concepts will be set forth in thedescription which follows, and in part will be apparent from thedescription, or may be learned by practice of the inventive concepts.

According to one aspect of the invention, a display device includes: adisplay panel and an input sensor disposed on the display panel andconfigured operable in a first mode and a second mode different from thefirst mode, wherein the input sensor may include a plurality of sensingelectrodes, a plurality of sensing wirings electrically connected to theplurality of sensing electrodes, respectively, and a blocking partcovering the plurality of sensing wirings. The blocking part isconfigured to be floated in the first mode and to receive asubstantially constant voltage in the second mode.

The blocking part may include a shielding layer having a mesh pattern.

A plurality of openings may be defined in the blocking part, theplurality of openings may be spaced apart in a first direction, and theplurality of openings may extend in a second direction crossing thefirst direction, respectively.

Each of the plurality of openings may have a width greater than a widthof each of the plurality of sensing wirings.

The display device may further include a controller to receive a signalfrom the input sensor and to remove the signal when the signal has ashape different from a shape of a Gaussian distribution.

The substantially constant voltage may be a ground voltage.

The substantially constant voltage may be substantially the same as avoltage provided to the plurality of sensing electrodes.

In the second mode, the plurality of sensing wirings and the blockingpart are configured to receive substantially the same voltage.

The plurality of sensing electrodes may include a plurality of sensingpatterns and a bridge pattern disposed on a layer different from theplurality of sensing patterns, the plurality of sensing wirings disposedon the same layer as any one of the plurality of sensing patterns or thebridge pattern, and the blocking part may be disposed on the same layeras the other of the plurality of sensing patterns or the bridge pattern.

The plurality of sensing electrodes may include a plurality of firstsensing electrodes and a plurality of second sensing electrodes. In thefirst mode, the plurality of first sensing electrodes may be configuredto output sensing signals and the plurality of second sensing electrodesmay be configured to receive driving signals in the first mode, and inthe second mode, the plurality of first and second sensing electrodesare configured to receive the same substantially constant voltage.

The input sensor may be configured to be operated in a capacitive typein the first mode, and may be configured to be operated to sense anelectrostatic signal in the second mode.

The blocking part may have a width in the first direction may be greaterthan a width of a wiring region, where the plurality of sensing wiringsextending in the second direction intersecting the first direction aredisposed, in the first direction.

An area of the blocking part may be larger than an area of the wiringregion.

According to another aspect of the invention, a display device includesa display panel, a plurality of sensing electrodes disposed on thedisplay panel, a plurality of sensing wirings electrically connected tothe plurality of sensing electrodes, respectively, and a blocking partdisposed on the plurality of sensing wirings and having a width in afirst direction greater than a width of a wiring region in the firstdirection where the plurality of sensing wirings are disposed. Theplurality of sensing electrodes includes a sensing pattern and a bridgepattern disposed on a different layer from the sensing pattern, theplurality of sensing wirings are disposed on the same layer as any oneof the sensing pattern or the bridge pattern, and the blocking part isdisposed on the same layer as the other of the sensing pattern or thebridge pattern.

The blocking part may cover the plurality of sensing wirings.

The blocking part may be configured to be floated or may be configuredto receive a ground voltage.

The blocking part is configured to operate in a first state or a secondstate different from the first state. The first state may be a state inwhich the blocking part is configured to be floated or to receive aground voltage, and the second state may be a state in which theblocking part is configured to receive a same voltage as that applied tothe plurality of sensing wirings.

The blocking part may include a shielding layer having a mesh pattern.

A plurality of openings may be formed in the blocking part, theplurality of openings may be spaced apart in the first direction, theplurality of openings each may extend in the second directionintersecting the first direction, and each of the plurality of openingsmay have a width greater than a width of each of the plurality ofsensing wirings.

According to one aspect of the invention, a display device includes: adisplay panel; and an input sensor disposed on the display panel,wherein the input sensor includes: a plurality of sensing electrodes; aplurality of sensing wirings electrically connected to the plurality ofsensing electrodes, respectively; and a conductive part covering theplurality of sensing wirings, wherein the conductive part is configuredto be floated or to receive a substantially constant voltage, andwherein the conductive part has a single, contiguous shape.

The conductive part may include a shielding layer having a mesh pattern.

A plurality of openings may be defined in the conductive part; and theplurality of openings may be spaced apart in a first direction, and theplurality of openings may extend in a second direction intersecting thefirst direction, respectively.

Each of the plurality of openings may have a width greater than a widthof each of the plurality of sensing wirings.

The display device may further include a controller to receive a signalfrom the input sensor and to remove the signal when the signal has ashape different from a shape of a Gaussian distribution.

The substantially constant voltage may be a ground voltage.

The substantially constant voltage may be substantially the same as avoltage provided to the plurality of sensing electrodes.

In the second mode, the plurality of sensing wirings and the conductivepart may be configured to receive substantially the same voltage.

The plurality of sensing electrodes may include a plurality of sensingpatterns and a bridge pattern disposed on a layer different from theplurality of sensing patterns; and the plurality of sensing wirings maybe disposed on the same layer as any one of the plurality of sensingpatterns or the bridge pattern, and the conductive part may be disposedon the same layer as the other of the plurality of sensing patterns orthe bridge pattern.

The plurality of sensing electrodes may include a plurality of firstsensing electrodes and a plurality of second sensing electrodes, whereininput sensor may operate in a first mode and a second mode differentfrom the first mode, wherein in the first mode, the plurality of firstsensing electrodes may be configured to output sensing signals and theplurality of second sensing electrodes is configured to receive drivingsignals, and in the second mode, the plurality of first and secondsensing electrodes may be configured to receive the same substantiallyconstant voltage.

The conductive part may have a width in a first direction greater than awidth of a wiring region in the first direction where the plurality ofsensing wirings extending in a second direction intersecting the firstdirection is disposed.

An area of the conductive part may be larger than an area of the wiringregion.

According to another aspect of the invention, a display device includes:a display panel; a plurality of sensing electrodes disposed on thedisplay panel; a plurality of sensing wirings electrically connected tothe plurality of sensing electrodes, respectively; and a conductive partdisposed on the plurality of sensing wirings and having a width in afirst direction greater than a width of a wiring region in the firstdirection where the plurality of sensing wirings is disposed, whereinthe plurality of sensing electrodes comprise a sensing pattern and abridge pattern disposed on a different layer from the sensing pattern,the plurality of sensing wirings are disposed on the same layer as thebridge pattern, and the conductive part is disposed on the same layer asthe sensing pattern.

The conductive part may have a single, contiguous shape and cover theplurality of sensing wirings.

The single, contiguous conductive part may be configured to be floatedor to receive a ground voltage.

The conductive part may be configured to operate in a first state or asecond state different from the first state, wherein the first state isa state in which the conductive part may be configured to be floated orto receive a ground voltage, and the second state is a state in whichthe conductive part may be configured to receive the same voltage asthat applied to the plurality of sensing wirings.

The single, contiguous conductive part may include a shielding layerhaving has a mesh pattern.

A plurality of openings may be formed in the single, contiguousconductive part; the plurality of openings may be spaced apart in afirst direction, and the plurality of openings each extend in a seconddirection intersecting the first direction; and each of the plurality ofopenings may have a width greater than a width of each of the pluralityof sensing wirings.

According to still another aspect of the invention, a display deviceincludes a display panel and an input sensor disposed on the displaypanel, wherein the input sensor may include a plurality of sensingelectrodes including first sensing electrodes and second sensingelectrodes, a plurality of sensing wirings may be disposed on the samelayer as the first sensing electrodes and electrically connected to thesensing electrodes, respectively, and a blocking part disposed on thesame layer as the second sensing electrodes and covering the pluralityof sensing wirings, and an area of the blocking part may be larger thanan area of a region where the plurality of sensing wirings are disposed.

It is to be understood that both the foregoing general description andthe following detailed description are illustrative and explanatory andare intended to provide further explanation of the invention as claimed.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are included to provide a furtherunderstanding of the invention and are incorporated in and constitute apart of this specification, illustrate embodiments of the invention, andtogether with the description serve to explain the inventive concepts.

FIG. 1 is a perspective view of an embodiment of a display deviceconstructed according to the principles of the invention.

FIG. 2 is an exploded perspective view of the display device of FIG. 1 .

FIGS. 3A and 3B are cross-sectional views of embodiments of the displaymodule shown in FIG. 2 .

FIG. 4 is a plan view of an embodiment of the display panel shown inFIG. 2 .

FIG. 5 is a plan view of a first embodiment of the input sensor shown inFIG. 2 .

FIG. 6 is a cross-sectional view of a portion of the input sensor takenalong line I-I′ of FIG. 5 .

FIG. 7 is a cross-sectional view of a portion of the input sensor takenalong line II-II′ of FIG. 5 .

FIG. 8 is a plan view of a second embodiment of an input sensor shown inFIG. 2 .

FIG. 9 is a plan view of a third embodiment of an input sensor shown inFIG. 2 .

FIG. 10A is a cross-sectional view taken along line III-III′ of FIG. 9 .

FIG. 10B is a graph illustrating a signal between a blocking part and asensing wiring shown in FIG. 9 .

FIG. 11 is a timing diagram of an embodiment of an operation of ablocking part according to modes of an input sensor.

FIG. 12 is a cross-sectional view of another embodiment of a portion ofthe input sensor taken along a line corresponding to I-I′ of FIG. 5 .

FIG. 13 is a cross-sectional view of another embodiment of a portion ofthe input sensor taken along a line corresponding to II-II′ of FIG. 5 .

FIG. 14 is a plan view of a fourth embodiment of an input sensor shownin FIG. 2 .

DETAILED DESCRIPTION

In the following description, for the purposes of explanation, numerousspecific details are set forth in order to provide a thoroughunderstanding of various embodiments or implementations of theinvention. As used herein “embodiments” and “implementations” areinterchangeable words that are non-limiting examples of devices ormethods employing one or more of the inventive concepts disclosedherein. It is apparent, however, that various embodiments may bepracticed without these specific details or with one or more equivalentarrangements. In other instances, well-known structures and devices areshown in block diagram form in order to avoid unnecessarily obscuringvarious embodiments. Further, various embodiments may be different, butdo not have to be exclusive. For example, specific shapes,configurations, and characteristics of an embodiment may be used orimplemented in another embodiment without departing from the inventiveconcepts.

Unless otherwise specified, the illustrated embodiments are to beunderstood as providing features of varying detail of some ways in whichthe inventive concepts may be implemented in practice. Therefore, unlessotherwise specified, the features, components, modules, layers, films,panels, regions, and/or aspects, etc. (hereinafter individually orcollectively referred to as “elements”), of the various embodiments maybe otherwise combined, separated, interchanged, and/or rearrangedwithout departing from the inventive concepts.

The use of cross-hatching and/or shading in the accompanying drawings isgenerally provided to clarify boundaries between adjacent elements. Assuch, neither the presence nor the absence of cross-hatching or shadingconveys or indicates any preference or requirement for particularmaterials, material properties, dimensions, proportions, commonalitiesbetween illustrated elements, and/or any other characteristic,attribute, property, etc., of the elements, unless specified. Further,in the accompanying drawings, the size and relative sizes of elementsmay be exaggerated for clarity and/or descriptive purposes. When anembodiment may be implemented differently, a specific process order maybe performed differently from the described order. For example, twoconsecutively described processes may be performed substantially at thesame time or performed in an order opposite to the described order.Also, like reference numerals denote like elements.

When an element, such as a layer, is referred to as being “on,”“connected to,” or “coupled to” another element or layer, it may bedirectly on, connected to, or coupled to the other element or layer orintervening elements or layers may be present. When, however, an elementor layer is referred to as being “directly on,” “directly connected to,”or “directly coupled to” another element or layer, there are nointervening elements or layers present. To this end, the term“connected” may refer to physical, electrical, and/or fluid connection,with or without intervening elements. Further, the D1-axis, the D2-axis,and the D3-axis are not limited to three axes of a rectangularcoordinate system, such as the x, y, and z-axes, and may be interpretedin a broader sense. For example, the D1-axis, the D2-axis, and theD3-axis may be perpendicular to one another, or may represent differentdirections that are not perpendicular to one another. For the purposesof this disclosure, “at least one of X, Y, and Z” and “at least oneselected from the group consisting of X, Y, and Z” may be construed as Xonly, Y only, Z only, or any combination of two or more of X, Y, and Z,such as, for instance, XYZ, XYY, YZ, and ZZ. As used herein, the term“and/or” includes any and all combinations of one or more of theassociated listed items.

Although the terms “first,” “second,” etc. may be used herein todescribe various types of elements, these elements should not be limitedby these terms. These terms are used to distinguish one element fromanother element. Thus, a first element discussed below could be termed asecond element without departing from the teachings of the disclosure.

Spatially relative terms, such as “beneath,” “below,” “under,” “lower,”“above,” “upper,” “over,” “higher,” “side” (e.g., as in “sidewall”), andthe like, may be used herein for descriptive purposes, and, thereby, todescribe one elements relationship to another element(s) as illustratedin the drawings. Spatially relative terms are intended to encompassdifferent orientations of an apparatus in use, operation, and/ormanufacture in addition to the orientation depicted in the drawings. Forexample, if the apparatus in the drawings is turned over, elementsdescribed as “below” or “beneath” other elements or features would thenbe oriented “above” the other elements or features. Thus, the exemplaryterm “below” can encompass both an orientation of above and below.Furthermore, the apparatus may be otherwise oriented (e.g., rotated 90degrees or at other orientations), and, as such, the spatially relativedescriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing particularembodiments and is not intended to be limiting. As used herein, thesingular forms, “a,” “an,” and “the” are intended to include the pluralforms as well, unless the context clearly indicates otherwise. Moreover,the terms “comprises,” “comprising,” “includes,” and/or “including,”when used in this specification, specify the presence of statedfeatures, integers, steps, operations, elements, components, and/orgroups thereof, but do not preclude the presence or addition of one ormore other features, integers, steps, operations, elements, components,and/or groups thereof. It is also noted that, as used herein, the terms“substantially,” “about,” and other similar terms, are used as terms ofapproximation and not as terms of degree, and, as such, are utilized toaccount for inherent deviations in measured, calculated, and/or providedvalues that would be recognized by one of ordinary skill in the art.

Unless otherwise defined, all terms (including technical and scientificterms) used herein have the same meaning as commonly understood by oneof ordinary skill in the art to which this disclosure is a part. Terms,such as those defined in commonly used dictionaries, should beinterpreted as having a meaning that is consistent with their meaning inthe context of the relevant art and should not be interpreted in anidealized or overly formal sense, unless expressly so defined herein.

FIG. 1 is a perspective view of an embodiment of a display deviceconstructed according to the principle of the invention. FIG. 2 is anexploded perspective view of the display device of FIG. 1 .

Referring to FIGS. 1 and 2 , a display device EA may be a deviceactivated according to electrical signals. The display device EA may beapplied to or take the form of various embodiments. For example, thedisplay device EA may not only be used for large-sized display devicessuch as a television set, a monitor, or an outdoor billboard but alsoused for small- and medium-sized display devices such as a personalcomputer, a laptop computer, a personal digital terminal, a carnavigation unit, a game console, a portable electronic device, asmartphone, and a camera. In addition, these examples are merelypresented as an embodiment, and thus it may be adopted for other displaydevices without departing from the inventive concepts. In theillustrated embodiment, the display device EA is exemplarily illustratedas a tablet.

The display device EA may display an image IM toward a third directionDR3 on a display surface FS parallel to a first direction DR1 and asecond direction DR2, respectively. The image IM may include a stillimage as well as a dynamic image. FIG. 1 illustrates watch windows andicons as an example of the image IM. The display surface FS on which theimage IM is displayed may correspond to a front surface of the displaydevice EA and may correspond to a front surface of a window WP.

In the illustrated embodiment, a front surface (or an upper surface) anda rear surface (or a lower surface) of each member is defined withrespect to a direction in which the image IM is displayed. The front andrear surfaces may oppose each other in a third direction DR3 and thenormal direction of each of the front and rear surfaces may be parallelto the third direction DR3. In the specification, a surface defined by afirst direction DR1 and a second direction DR2 is defined as a plan, and“viewed on a plan” may be defined as viewed from the third directionDR3.

The third direction DR3 may be a direction intersecting the firstdirection DR1 and the second direction DR2. The first direction DR1, thesecond direction DR2, and the third direction DR3 may be orthogonal toeach other.

The display device EA may include a window WP, a display module DM, anda housing HU. In the illustrated embodiment, the window WP and thehousing HU may be combined to form the exterior of the display deviceEA.

The window WP may include an optically transparent insulating material.For example, the window WP may include glass or plastic. The window WPmay have a multi-layer structure or a single-layer structure. Forexample, the window WP may include a plurality of plastic films whichare bonded by an adhesive, or may include a glass substrate and aplastic film, which are bonded by an adhesive.

As described above, the display surface FS of the window WP may define afront surface of the display device EA. The display surface FS mayinclude a transmission area TA and a bezel area BZA. The transmissionarea TA may be an optically transparent area. For example, thetransmission area TA may be an area having a visible light transmittanceof about 90% or more.

The bezel area BZA may have a predetermined color. The bezel area BZAmay cover a peripheral area of the display module DM to prevent theperipheral area from being viewed from the outside. Meanwhile, this isexemplarily illustrated, and in the window WP, the bezel area BZA may beomitted.

The display module DM may display an image IM and sense an externalinput. The display module DM may include a display panel DP and an inputsensor IS.

The display panel DP may be a light emitting display panel, and is notparticularly limited. For example, the display panel DP may be anorganic light emitting display panel or a quantum dot light emittingdisplay panel. An emission layer of the organic light emitting displaypanel may include an organic light emitting material. An emission layerof the quantum dot light emitting display panel may include a quantumdot, a quantum rod, etc.

An input sensor IS may be disposed on the display panel DP. The inputsensor IS may have a multi-layer structure. The input sensor IS maysense an external input applied from the outside. The external input maybe a user's input. The user's input may include various forms ofexternal inputs such as a part of a user's body, light, heat, pen, orpressure.

The housing HU may be combined with the window WP. The housing HU may becombined with the window WP to provide a predetermined interior space.The display module DM may be accommodated in the interior space.

The housing HU may include a material having a relatively higherrigidity. For example, the housing HU may include a plurality of framesand/or plates formed of glass, plastic, or metal, or a combinationthereof. The housing HU may stably protect components of the displaydevice EA accommodated in the interior space from external shocks.

According to an embodiment, the display device EA may sense touchcoordinates based on the movement of a sensing pen PN. The sensing penPN may include a body part BD and a sensing part DT connected to one endof the body part BD. The body part BD may include a power unit, and thepower unit may provide power to the sensing part DT. The sensing part DTmay correspond to a general pen tip. The sensing part DT may include aconductive material. The sensing part DT may generate an electric fieldbetween surrounding conductive objects in response to the power suppliedfrom the power unit. The sensing pen PN may include an activeelectrostatic pen (AES pen).

FIG. 3A is a cross-sectional view of an embodiment of the display moduleshown in FIG. 2 .

Referring to FIG. 3A, the display module DM may include a display panelDP, an input sensor IS, and a bonding member SLM.

The display panel DP may include a first base layer BS1, a displaycircuit layer DP-CL, and an image implementation layer DP-OLED.

The first base layer BS1 and a second base layer BS2 each may have astacking structure including a silicon substrate, a plastic substrate, aglass substrate, an insulating film, or a plurality of insulatinglayers.

The display circuit layer DP-CL may be disposed on the first base layerBS1. The display circuit layer DP-CL may include a plurality ofinsulating layers, a plurality of conductive layers, and a semiconductorlayer. The plurality of conductive layers of the display circuit layerDP-CL may constitute signal lines or a control circuit for pixels.

The image implementation layer DP-OLED may be disposed on the displaycircuit layer DP-CL. The image implementation layer DP-OLED may includeorganic light emitting diodes. However, this is an example, and theimage implementation layer DP-OLED may include inorganic light emittingdiodes, organic-inorganic light emitting diodes, or a liquid crystallayer.

The input sensor IS may be disposed on the display panel DP. The inputsensor IS may include a second base layer BS2 and a sensing circuitlayer ML-T.

The second base layer BS2 may be disposed on the image implementationlayer DP-OLED. A predetermined space may be defined between the secondbase layer BS2 and the image implementation layer DP-OLED. The space maybe filled with air or an inert gas. In addition, the space may be filledwith a filler such as a silicone-based polymer, an epoxy-based resin, oran acrylic-based resin.

The sensing circuit layer ML-T may be disposed on the second base layerBS2. The sensing circuit layer ML-T may include a plurality ofinsulating layers and a plurality of conductive layers. The plurality ofconductive layers may include a plurality of sensing electrodes forsensing an external input and a plurality of lines in the form ofsensing wirings electrically connected to the plurality of sensingelectrodes, respectively. This will be described later.

A bonding member SLM may be disposed between the first base layer BS1and the second base layer BS2. The bonding member SLM may combine thefirst base layer BS1 and the second base layer BS2. The bonding memberSLM may include an organic material such as a photo-curable resin or aphoto-plastic resin, or an inorganic material such as a frit seal, andis not limited to any one specific configuration.

FIG. 3B is a cross-sectional view of another embodiment of the displaymodule shown in FIG. 2 . In describing FIG. 3B, like reference numeralsare applied to like components described in FIG. 3A, and a repetitivedescription will be omitted to avoid redundancy.

Referring to FIG. 3B, a display module DM-1 may include a display panelDP-1 and an input sensor IS-1. The input sensor IS-1 may be referred toas an input sensor layer.

The display panel DP-1 may include a first base layer BS1, a displaycircuit layer DP-CL, an image implementation layer DP-OLED, and a thinfilm encapsulation layer TFE.

The thin film encapsulation layer TFE may be disposed on the imageimplementation layer DP-OLED to cover the image implementation layerDP-OLED. The thin film encapsulation layer TFE may include a firstinorganic layer, an organic layer, and a second inorganic layersequentially stacked along the third direction DR3. However, this is anexample and the thin film encapsulation layer TFE is not limitedthereto. For example, the thin film encapsulation layer TFE may furtherinclude a plurality of inorganic layers and a plurality of organiclayers.

The first inorganic layer may prevent external moisture or oxygen frompenetrating the image implementation layer DP-OLED. For example, thefirst inorganic layer may include silicon nitride, silicon oxide, or acombination thereof.

The organic layer may be disposed on the first inorganic layer toprovide a flat surface. The organic layer may cover the curvature formedon an upper surface of the first inorganic layer or particles present onthe first inorganic layer. For example, the organic layer may include anacrylic-based organic layer, and is not limited thereto.

The second inorganic layer may be disposed on the organic layer to coverthe organic layer. The second inorganic layer may seal moisture, etc.discharged from the organic layer to prevent inflow into the outside.The second inorganic layer may include silicon nitride, silicon oxide,or a combination thereof.

The input sensor IS-1 may be formed on the display panel DP-1 through acontinuous process. In this case, the input sensor IS-1 may be indicatedas being directly disposed on the display panel DP-1. Being directlydisposed may indicate that a third component is not disposed between theinput sensor IS-1 and the display panel DP-1. That is, a separateadhesive member may not be disposed between the input sensor IS-1 andthe display panel DP-1.

The input sensor IS-1 may include a base insulating layer IS-IL0 and asensing circuit layer ML-T.

The base insulating layer IS-IL0 may be disposed on the thin filmencapsulation layer TFE. The base insulating layer IS-IL0 may include aninorganic material, an organic material, or a composite material. Thebase insulating layer IS-IL0 may be directly disposed on the displaypanel DP-1. For example, the base insulating layer IS-IL0 may be indirect contact with the thin film encapsulation layer TFE. The baseinsulating layer IS-IL0 may have a single-layer or multi-layerstructure. Alternatively, the base insulating layer IS-IL0 may beomitted.

The sensing circuit layer ML-T may be disposed on the base insulatinglayer IS-IL0.

FIG. 4 is a plan view of an embodiment of the display panel shown inFIG. 2 .

Referring to FIG. 4 , the display panel DP may include a first baselayer BS1, a plurality of pixels PX, a plurality of signal lines GL, DL,PL, and ECL, and a plurality of display pads PDD.

An active area AA and a peripheral area NAA adjacent to the active areaAA may be defined in the display panel DP. The active area AA may be anarea where the image IM (see FIG. 1 ) is displayed, and the peripheralarea NAA may be an area where a driving circuit or a driving wire isdisposed. A plurality of pixels PX may be disposed in the active areaAA. The active area AA may correspond to the transmission area TA (seeFIG. 1 ). The peripheral area NAA may correspond to the bezel area BZA(see FIG. 1 ).

The plurality of signal lines GL, DL, PL, and ECL may be disposed on thefirst base layer BS1. The plurality of signal lines GL, DL, PL, and ECLmay be connected to the plurality of pixels PX to transmit an electricalsignal to the plurality of pixels PX. Among the signal lines included inthe display panel DP, a plurality of scan lines GL (hereinafter, scanlines), a plurality of data lines DL (hereinafter, data lines), aplurality of power lines PL (hereinafter, power lines), and a pluralityof emission control lines ECL (hereinafter, emission control lines) areexemplarily illustrated. However, this is an example, and the pluralityof signal lines GL, DL, PL, and ECL may further include initializationvoltage lines, and are not limited to any one configuration. Theplurality of signal lines GL, DL, PL, and ECL may constitute the displaycircuit layer DP-CL (see FIG. 3A).

A power pattern VDD may be disposed in the peripheral area NAA. Thepower pattern VDD may be connected to the power lines PL. The displaypanel DP may include the power pattern VDD to provide the same powersignal to the plurality of pixels PX.

The display pads PDD may include a first pad D1 and a second pad D2. Thefirst pad D1 may be provided in plural. The plurality of first pads D1may be connected to the data lines DL, respectively. The second pad D2may be connected to the power pattern VDD to be electrically connectedto the power line PL. The display panel DP may provide electricalsignals provided from the outside to the plurality of pixels PX throughthe display pads PDD. The display pads PDD may further include pads forreceiving other electrical signals in addition to the first pad D1 andthe second pad D2, and are not limited to any one configuration.

A driving chip IC may be mounted in the peripheral area NAA. The drivingchip IC may be a chip-type timing control circuit. The data lines DL maybe electrically connected to the plurality of first pads D1 through thedriving chip IC, respectively. However, this is an example, and thedriving chip IC may be mounted on a separate film from the display panelDP. In this case, the driving chip IC may be electrically connected tothe display pads PDD through the film.

FIG. 5 is a plan view of a first embodiment of the input sensor shown inFIG. 2 .

Referring to FIGS. 1, 4, and 5 , the input sensor IS may include asecond base layer BS2, a plurality of sensing electrodes TE1 and TE2, aplurality of lines in the form of sensing wirings TL1, TL2, and TL3, aplurality of sensing pads PDT, and a blocking part that may be in theform of a shielding layer or any other structure or member that blockselectrical or electrostatic interference from reaching the sensingwirings.

An active area AA-I and a peripheral area NAA-I adjacent to the activearea AA-I may be defined in the input sensor IS. The active area AA-Imay be an area sensing an external input, and the peripheral area NAA-Imay be an area where wirings, etc. are disposed. A plurality of sensingelectrodes TE1 and TE2 may be disposed in the active area AA-I. Theactive area AA-I may correspond to the transmission area TA and theactive area AA of the display panel DP. The peripheral area NAA-I maycorrespond to the bezel area BZA and the peripheral area NAA of thedisplay panel DP.

The display device EA may further include a controller CT that controlsthe input sensor IS. The controller CT may control the input sensor ISto operate in the first mode or the second mode.

The first mode may be a touch mode that recognizes input via a part of auser's body.

In the first mode, a plurality of first sensing electrodes TE1 mayoutput a sensing signal, and a plurality of second sensing electrodesTE2 may receive a driving signal. In this case, the display device EAmay apply the driving signal to the plurality of second sensingelectrodes TE2 to scan the active area AA-I, and may sense an area wherea touch is applied through a sensing signal output from the plurality offirst sensing electrodes TE1. For example, the input sensor IS may bedriven in a mutual capacitive type in the first mode.

This configuration is exemplarily illustrated, and the plurality offirst sensing electrodes TE1 may receive a driving signal, and theplurality of second sensing electrodes TE2 may output a sensing signal,and additionally receive or output other electrical signals.

The second mode may be a mode after the first mode. The second mode maybe a pen mode that recognizes the sensing pen PN.

In the second mode, the same sensing signal may be provided to theplurality of first sensing electrodes TE1 and the plurality of secondsensing electrodes TE2. The sensing signal may be a substantiallyconstant voltage. The substantially constant voltage may have a voltagedifferent from the voltage provided to the sensing part DT. For example,the substantially constant voltage may have a value of about 1V (volt)to about 2V. However, this is an example and the value of thesubstantially constant voltage is not limited thereto.

In addition, the input sensor IS may sense change in amount ofvoltage/current of the sensing signal provided to the plurality of firstsensing electrodes TE1 and the plurality of second sensing electrodesTE2. The input sensor IS may recognize touch coordinates based on thechange in amount of voltage/current. For example, the input sensor ISmay be driven by sensing an electrostatic signal input from the outside(e.g., an active electrostatic pen (AES pen) in the second mode.

The plurality of sensing electrodes TE1 and TE2 may include a pluralityof first sensing electrodes TE1 and a plurality of second sensingelectrodes TE2. The plurality of first sensing electrodes TE1 and theplurality of second sensing electrodes TE2 may be disposed on the activearea AA-I.

According to an embodiment, when the sensing pen PN contacts orapproaches the input sensor IS in the second mode, the input sensor ISmay sense touch coordinates. When the sensing part DT of the sensing penPN contacts or approaches the input sensor IS, an electric field may begenerated between the sensing part DT and the plurality of sensingelectrodes TE1 and TE2.

In this case, the intensity of the voltage provided to the sensing partDT and the intensity of the voltage provided to the plurality of sensingelectrodes TE1 and TE2 may be different from each other. A potentialdifference may be generated as the intensity of the voltage provided tothe sensing part DT and the intensity of the voltage provided to theplurality of sensing electrodes TE1 and TE2 are different from eachother. Due to the potential difference, an electric field may begenerated between the sensing part DT and the plurality of sensingelectrodes TE1 and TE2. Based on the intensity of the electric fieldbetween the sensing part DT and the plurality of sensing electrodes TE1and TE2, the input sensor IS may touch sensing coordinates.

The plurality of first sensing electrodes TE1 each may extend along thefirst direction DR1. The plurality of first sensing electrodes TE1 maybe arranged along the second direction DR2. The plurality of firstsensing electrodes TE1 each may include a plurality of sensing patternsSP1 and a plurality of bridge patterns BP1. The plurality of sensingpatterns SP1 may be arranged in the first direction DR1. The pluralityof sensing patterns SP1 may be referred to as a plurality of firstsensing patterns SP1. At least one bridge pattern BP1 may connect twosensing patterns SP1 adjacent to each other.

The plurality of second sensing electrodes TE2 each may extend along thesecond direction DR2. The plurality of second sensing electrodes TE2 maybe arranged along the first direction DR1. The plurality of secondsensing electrodes TE2 each may include a plurality of first portionsSP2 and a plurality of second portions BP2. The plurality of firstportions SP2 may be arranged in the second direction DR2. The pluralityof first portions SP2 may be referred to as a plurality of secondsensing patterns SP2. At least one second portion BP2 may connect twofirst portions SP2 adjacent to each other. The plurality of secondportions BP2 may insulatively cross the plurality of bridge patternsBP1, respectively.

The plurality of sensing wirings TL1, TL2, and TL3 may be disposed inthe peripheral area NAA-I. The plurality of sensing wirings TL1, TL2,and TL3 may include a plurality of first sensing wirings TL1, aplurality of second sensing wirings TL2, and a plurality of thirdsensing wirings TL3.

The plurality of first sensing wirings TL1 may be connected to theplurality of first sensing electrodes TE1, respectively. The pluralityof second sensing wirings TL2 may be connected to one end of theplurality of second sensing electrodes TE2, respectively. The pluralityof third sensing wirings TL3 may be connected to the other end of theplurality of second sensing electrodes TE2, respectively. The other endof the plurality of second sensing electrodes TE2 may be a portionopposite to one end of the plurality of second sensing electrodes TE2.

The plurality of second sensing electrodes TE2 may be connected to theplurality of second sensing wirings TL2 and the plurality of thirdsensing wirings TL3, respectively. Accordingly, sensitivity according toa region may be substantially uniformly maintained for the plurality ofsecond sensing electrodes TE2 having a relatively longer length comparedto the plurality of first sensing electrodes TE1.

The plurality of sensing pads PDT may be disposed in the peripheral areaNAA-I. The plurality of sensing pads PDT may include a plurality offirst sensing pads TP1, a plurality of second sensing pads TP2, and aplurality of third sensing pads TP3.

The plurality of first sensing pads TP1 may be connected to theplurality of first sensing wirings TL1, respectively. The plurality offirst sensing pads TP1 may be electrically connected to the plurality offirst sensing electrodes TE1, respectively.

The plurality of second sensing pads TP2 may be connected to theplurality of second sensing wirings TL2, respectively. The plurality ofthird sensing pads TP3 may be connected to the plurality of thirdsensing wirings TL3, respectively. The plurality of second sensing padsTP2 and the plurality of third sensing pads TP3 may be connected to theplurality of second sensing electrodes TE2, respectively.

Some of the plurality of first sensing pads TP1 may be disposed adjacentto the plurality of second sensing pads TP2. The rest of the pluralityof first sensing pads TP1 may be disposed adjacent to the plurality ofthird sensing pads TP3. However, this is an example and the arrangementrelationship of each of the sensing pads PDT is not limited thereto, andmay be variously modified.

The blocking part BK may be disposed in the peripheral area NAA-I. Aground voltage may be provided to the blocking part BK. However, this isan example and the electrical state of the blocking part BK s notlimited thereto. For example, the blocking part BK may be floated.

When viewed on a plan, the blocking part BK may cover a plurality ofsensing wirings TL1, TL2, and TL3. When viewed on a plan, the area ofthe blocking part BK may be larger than the area of a region where theplurality of sensing wirings TL1, TL2, and TL3 are disposed.

The first wiring region AR-TL1 where the plurality of first sensingwirings TL1 extending in the second direction DR2 are disposed may havea width WD-TL1 in the first direction DR1. The blocking part BKoverlapping the plurality of first sensing wirings TL1 may have a widthWD-BK1 in the first direction DR1. The width WD-BK1 of the blocking partBK may be greater than the width WD-TL1 of a region where the pluralityof first sensing wirings TL1 are disposed.

The second wiring region AR-TL2 where the plurality of second sensingwirings TL2 extending in the first direction DR1 are disposed may have awidth WD-TL2 in the second direction DR2. The blocking part BKoverlapping the plurality of second sensing wirings TL2 may have a widthWD-BK2 in the second direction DR2. The width WD-BK2 of the blockingpart BK may be greater than the width WD-TL2 of a region where theplurality of second sensing wirings TL2 are disposed.

The third wiring region AR-TL3 where the plurality of third sensingwirings TL3 extending in the first direction DR1 are disposed may have awidth WD-TL3 in the second direction DR2. The blocking part BKoverlapping the plurality of third sensing wirings TL3 may have a widthWD-BK3 in the second direction DR2. The width WD-BK3 of the blockingpart BK may be greater than the width WD-TL3 of a region where theplurality of third sensing wirings TL3 are disposed.

In general, in the second mode, when the sensing pen PN is adjacent tothe boundaries of the active area AA-I and the peripheral area NAA-I, anelectric field may be generated between the sensing part DT and theplurality of sensing wirings TL1, TL2, and TL3. Jitter may be generateddue to the electric field. In addition, when the active area AA-I andthe plurality of sensing wirings TL1, TL2, and TL3 are spaced apart by apredetermined distance to prevent the generation of the electric field,the area of the bezel area BZA may increase. However, according to theembodiments, the blocking part BK may be disposed on the plurality ofsensing wirings TL1, TL2, and TL3. The blocking part BK may block staticelectricity provided from the sensing pen PN in the second mode. Theblocking part BK may prevent the electric field from being generatedbetween the sensing pen PN and the plurality of sensing wirings TL1,TL2, and TL3 in the second mode. The blocking part BK may prevent thejitter from being generated between the sensing pen PN and the pluralityof sensing wirings TL1, TL2, and TL3. The blocking part BK may prevent asignal transmitted through the plurality of sensing wirings TL1, TL2 andTL3 from being distorted by the sensing pen PN. Accordingly, a displaydevice EA having reduced noise may be provided, and a display device EAhaving improved sensing reliability at the boundaries of the active areaAA-I and the peripheral area NAA-I may be provided. In addition, adisplay device EA having a reduced area of the bezel area BZA may beprovided.

FIG. 6 is a cross-sectional view of a portion of the input sensor takenalong line I-I′ of FIG. 5 .

Referring to FIGS. 5 and 6 , a sensing circuit layer ML-T (see FIG. 3A)may be disposed on the second base layer BS2. However, this is anexample and the stacking structure of the input sensor IS is not limitedthereto. For example, the second base layer BS2 may be a base insulatinglayer IS-IL0 (see FIG. 3B), and the sensing circuit layer ML-T (see FIG.3B) may be disposed on the base insulating layer IS-IL0.

The sensing circuit layer ML-T (see FIG. 3A) may include a firstconductive layer IS-CL1, a first insulating layer IS-IL1, a secondconductive layer IS-CL2, and a second insulating layer IS-IL2. The firstinsulating layer IS-IL1 and the second insulating layer IS-IL2 each mayhave a single-layer or multi-layer structure. The first insulating layerIS-IL1 and the second insulating layer IS-IL2 each may include aninorganic material, an organic material, or a composite material.

The first conductive layer IS-CL1 may be disposed on the second baselayer BS2. The first conductive layer IS-CL1 of FIG. 6 may include aplurality of bridge patterns BP1 of FIG. 5 .

The first conductive layer IS-CL1 may include an opaque metal conductivelayer. For example, the first conductive layer IS-CL1 may include ametal material, for example, molybdenum, silver, titanium, copper,aluminum, or an alloy thereof. The alloy may be, for example, molybdenumniobium. In addition, the metal layer may include a conductive polymersuch as PEDOT, a metal nanowire, graphene, etc.

The first insulating layer IS-IL1 may be disposed on the firstconductive layer IS-CL1 and the second base layer BS2. A plurality offirst contact holes CNT1 penetrating in the third direction DR3 may bedefined in the first insulating layer IS-IL1.

The second conductive layer IS-CL2 may be disposed on the firstinsulating layer IS-IL1. The second conductive layer IS-CL2 may includea plurality of second sensing electrodes TE2 and a plurality of sensingpatterns SP1. Two adjacent sensing patterns SP1 among the plurality ofsensing patterns SP1 may be electrically connected to the bridge patternBP1 through the plurality of first contact holes CNT1.

The second conductive layer IS-CL2 may include a transparent conductivelayer. As used herein, being “transparent” means that the lighttransmittance is greater than a predetermined level. For example, thepredetermined level may be 90%, but the embodiments are not limitedthereto. The transparent conductive layer may include a transparentconductive oxide such as indium tin oxide (ITO), indium zinc oxide(IZO), zinc oxide (ZnO), or indium zinc tin oxide (IZTO). However, thisis an example and the second conductive layer IS-CL2 is not limitedthereto. For example, the second conductive layer IS-CL1 may include ametal layer. For example, the metal layer may include molybdenum,silver, titanium, copper, aluminum, and an alloy thereof. In addition,the metal layer may include a conductive polymer such as PEDOT, a metalnanowire, graphene, etc.

FIG. 7 is a cross-sectional view of a portion of the input sensor takenalong line II-II′ of FIG. 5 . In describing FIG. 7 , like referencenumerals are applied to the components described in FIG. 6 , and arepetitive description will be omitted to avoid redundancy.

Referring to FIGS. 5 to 7 , a bridge pattern BP1 and a plurality ofthird sensing wirings TL3 may be disposed on the second base layer BS2.The bridge pattern BP1 and the plurality of third sensing wirings TL3may be formed through the same process to include the same material andhave the same stacking structure.

The first insulating layer IS-IL1 may be disposed on the bridge patternBP1 and the plurality of third sensing wirings TL3. A plurality ofsecond contact holes CNT2 penetrating in the third direction DR3 may bedefined in the first insulating layer IS-IL1.

The plurality of second sensing electrodes TE2 and the blocking part BKmay be disposed on the first insulating layer IS-IL1. The plurality ofsecond sensing electrodes TE2 and the blocking part BK may be formedthrough the same process to include the same material and have the samestacking structure. Accordingly, for example, the blocking part BK mayinclude a transparent conductive layer as like the second conductivelayer IS-CL2. The plurality of second sensing electrodes TE2 may beconnected to the plurality of third sensing wirings TL3 through theplurality of second contact holes CNT2.

The second insulating layer IS-IL2 may be disposed on the plurality ofsecond sensing electrodes TE2 and the blocking part BK.

According to the embodiments, the blocking part BK may be formedsimultaneously while the plurality of sensing patterns SP1 and theplurality of second sensing electrodes TE2 are formed. Accordingly, adisplay device EA (see FIG. 1 ) having a simplified process may beprovided. In addition, the widths WD-TL1, WD-TL2, and WD-TL3 of theplurality of sensing wirings TL1, TL2, and TL3 are smaller than thewidths WD-BK1, WD-BK2, and WD-BK3 of the blocking part BK. When viewedon a plan, the blocking part BK may cover a plurality of sensing wiringsTL1, TL2, and TL3. The blocking part BK may block static electricityprovided from the sensing pen PN (see FIG. 1 ). The blocking part BK mayprevent an electric field from being generated between the sensing penPN (see FIG. 1 ) and the plurality of sensing wirings TL1, TL2 and TL3.The blocking part BK may prevent jitter from being generated between thesensing pen PN (see FIG. 1 ) and the plurality of sensing wirings TL1,TL2 and TL3. The blocking part BK may prevent a signal transmittedthrough the plurality of sensing wirings TL1, TL2, and TL3 from beingdistorted by the sensing pen PN (see FIG. 1 ). Accordingly, a displaydevice EA (see FIG. 1 ) having reduced noise may be provided, and adisplay device EA (see FIG. 1 ) having improved sensing reliability atthe boundaries of the active area AA-I and the peripheral area NAA-I maybe provided.

FIG. 8 is a plan view of a second embodiment an input sensor shown inFIG. 2 . In describing FIG. 8 , like reference numerals are applied tothe components described in FIG. 5 , and a repetitive description willbe omitted to avoid redundancy.

Referring to FIG. 8 , the input sensor IS-1 may include a second baselayer BS2, a plurality of sensing electrodes TE1 and TE2, a plurality ofsensing wirings TL1, TL2, and TL3, a plurality of sensing pads PDT, anda blocking part BK-1.

The blocking part BK-1 may have a mesh pattern.

The blocking part BK-1 overlapping the plurality of first sensingwirings TL1 may have a width WD-BK11 in the first direction DR1. Thewidth WD-BK11 of the blocking part BK-1 may be greater than the widthWD-TL1 of the first wiring region AR-TL1 where the plurality of firstsensing wirings TL1 are disposed.

The blocking part BK-1 overlapping the plurality of second sensingwirings TL2 may have a width WD-BK12 in the second direction DR2. Thewidth WD-BK12 of the blocking part BK-1 may be greater than the widthWD-TL2 of the second wiring region AR-TL2 where the plurality of secondsensing wirings TL2 are disposed.

The blocking part BK-1 overlapping the plurality of third sensingwirings TL3 may have a width WD-BK13 in the second direction DR2. Thewidth WD-BK13 of the blocking part BK-1 may be greater than the widthWD-TL3 of the third wiring region AR-TL3 where the plurality of thirdsensing wirings TL3 are disposed.

According to the embodiments, the blocking part BK-1 may be disposed onthe plurality of sensing wirings TL1, TL2, and TL3. The blocking part BKmay block static electricity provided from the sensing pen PN (see FIG.1 ). The blocking part BK-1 may prevent an electric field from beinggenerated between the sensing pen PN (see FIG. 1 ) and the plurality ofsensing wirings TL1, TL2, and TL3. The blocking part BK-1 may preventjitter from being generated between the sensing pen PN (see FIG. 1 ) andthe plurality of sensing wirings TL1, TL2, and TL3. The blocking partBK-1 may prevent a signal transmitted through the plurality of sensingwirings TL1, TL2, and TL3 from being distorted by the sensing pen PN(see FIG. 1 ). Accordingly, a display device EA (see FIG. 1 ) havingimproved sensing reliability at the boundaries of the active area AA-Iand the peripheral area NAA-I may be provided. In addition, parasiticcapacitance formed between the blocking part BK-1 and the plurality ofsensing wirings TL1, TL2, and TL3 may be reduced by a plurality ofopenings defined in the mesh pattern. When the sensing pen PN (see FIG.1 ) is sensed in the active area AA-I, the parasitic capacitance isreduced, thereby having reduced signal distortion generated by theparasitic capacitance. Accordingly, a display device EA (see FIG. 1 )having improved sensing reliability in the active area AA-I may beprovided.

FIG. 9 is a plan view of a third embodiment an input sensor shown inFIG. 2 , FIG. 10A is a cross-sectional view taken along line III-III′ ofFIG. 9 , and FIG. 10B is a graph illustrating a signal between ablocking part and a sensing wiring shown in FIG. 9 . In describing FIG.9 , like reference numerals are applied to the components described inFIG. 5 , and a repetitive description will be omitted to avoidredundancy.

Referring to FIGS. 9, 10A, and 10B, the input sensor IS-2 may include asecond base layer BS2, a plurality of sensing electrodes TE1 and TE2, aplurality of sensing wirings TL1, TL2, and TL3, a plurality of sensingpads PDT, and a blocking part BK-2.

A plurality of openings OP may be defined in the blocking part BK-2. Theplurality of openings OP may include a plurality of first openings OP-1,a plurality of second openings OP-2, and a plurality of third openingsOP-3.

The plurality of first openings OP-1 may overlap the plurality of firstsensing wirings TL1. The plurality of first openings OP-1 may be spacedapart in the first direction DR1, and the plurality of first openingsOP-1 may extend in the second direction DR2, respectively. Although FIG.9 exemplarily illustrates four first openings OP-1, the number of theplurality of first openings OP-1 is not limited thereto. The number ofthe first openings OP-1 may be provided based on the number of theplurality of first sensing wirings TL1. For example, the number of theplurality of first openings OP-1 may be provided as ½ of the number ofthe plurality of first sensing wirings TL1.

The plurality of second openings OP-2 may overlap the plurality ofsecond sensing wirings TL2. The plurality of second openings OP-2 may bespaced apart in the second direction DR2, and the plurality of secondopenings OP-2 may extend in the first direction DR1, respectively.Although FIG. 9 exemplarily illustrates four second openings OP-2, thenumber of the plurality of second openings OP-2 is not limited thereto.The number of the plurality of second openings OP-2 may be providedbased on the number of the plurality of second sensing wirings TL2. Forexample, the number of the plurality of second openings OP-2 may beprovided as ½ of the number of the plurality of second sensing wiringsTL2.

The plurality of third openings OP-3 may overlap the plurality of thirdsensing wirings TL3. The plurality of third openings OP-3 may be spacedapart in the second direction DR2, and the plurality of second openingsOP-2 may extend in the first direction DR1, respectively. Although FIG.9 exemplarily illustrates four third openings OP-3, the number of theplurality of third openings OP-3 is not limited thereto. The number ofthe plurality of the third openings OP-3 may be provided based on thenumber of the plurality of the third sensing wirings TL3. For example,the number of the plurality of third openings OP-3 may be provided as ½of the number of the plurality of third sensing wirings TL3.

The blocking part BK-2 overlapping the plurality of first sensingwirings TL1 may have a width WD-BK21 in the first direction DR1. Thewidth WD-BK21 of the blocking part BK-2 may be greater than the widthWD-TL1 of the first wiring region AR-TL1 where the plurality of firstsensing wirings TL1 are disposed.

The blocking part BK-2 overlapping the plurality of second sensingwirings TL2 may have a width WD-BK22 in the second direction DR2. Thewidth WD-BK22 of the blocking part BK-2 may be larger than the widthWD-TL2 of the second wiring region AR-TL2 where the plurality of secondsensing wirings TL2 are disposed.

The blocking part BK-2 overlapping the plurality of third sensingwirings TL3 may have a width WD-BK23 in the second direction DR2. Thewidth WD-BK23 of the blocking part BK-2 may be greater than the widthWD-TL3 of the third wiring region AR-TL3 where the plurality of thirdsensing wirings TL3 are disposed.

The widths WD-OP of the plurality of openings OP each may be greaterthan the widths WD-TL of the plurality of sensing wirings TL1, TL2, andTL3 each.

The controller CT may receive a signal SG from an input sensor IS-2 todetermine whether the signal SG has the shape of a Gaussiandistribution.

When the signal SG has the shape of the Gaussian distribution, thecontroller CT may not remove the signal SG, and when the signal SG has ashape different from the shape of the Gaussian distribution, thecontroller CT may remove the signal SG.

In general, when the sensing pen PN (see FIG. 1 ) is adjacent to theboundaries of the active area AA-I and the peripheral area NAA-I, anelectric field may be generated between the sensing part DT (see FIG. 1) and a plurality of sensing wirings TL1, TL2, and TL3. For example,referring to FIG. 10B, a first signal SG0 (shown as a dotted line inFIG. 10B) may be generated in the sensing wirings TL1, TL2, and TL3 bythe electric field. The first signal SG0 may have a shape of theGaussian distribution. The first signal SG0 may be jitter. However,according to the embodiments, the blocking part BK-2 may block a part ofstatic electricity provided from the sensing pen PN (see FIG. 1 ) at theboundaries of the active area AA-I and the peripheral area NAA-I.Therefore, referring to FIG. 10B, the signal generated in the sensingwirings TL1, TL2, and TL3 may have the same shape as a second signal SG1(shown as a solid line in FIG. 10B) by the blocking part BK-2. Thesecond signal SG1 may have a shape different from the shape of theGaussian distribution by the blocking part BK-2. For example, the secondsignal SG1 may decrease in the region where the blocking part BK-2 isdisposed, and may have a shape in which a signal is applied by widthsWD-OP of the plurality of openings OP each in the region where theplurality of openings OP are defined.

When the second signal SG1 is input, the controller CT may remove thesecond signal SG1. Accordingly, a display device EA (see FIG. 1 ) havingimproved sensing reliability at the boundaries of the active area AA-Iand the peripheral area NAA-I may be provided. In addition, the blockingpart BK-2 where the plurality of openings OP are defined may reduceparasitic capacitance formed between the blocking part BK-2 and theplurality of sensing wirings TL1, TL2, and TL3. When the sensing pen PN(see FIG. 1 ) is sensed in the active area AA-I, signal distortiongenerated by the parasitic capacitance may be reduced. Accordingly, adisplay device EA (see FIG. 1 ) having improved sensing reliability inthe active area AA-I may be provided.

FIG. 11 is a timing diagram of an embodiment of an operation of ablocking part according to modes of an input sensor.

For example, referring to FIGS. 5 and 11 , the input sensor IS mayoperate in a first mode MD1, a second mode MD2, and a third mode MD3.The first mode MD1, the second mode MD2, and the third mode MD3 mayoperate in order according to time t. The first mode MD1, the secondmode MD2, and the third mode MD3 may operate for the same time period.However, this is an example, and the operation time of the first modeMD1, the second mode MD2, and the third mode MD3 is not limited thereto.For example, the operation time of the first mode MD1, the second modeMD2, and the third mode MD3 may be different from each other.

The first mode MD1 and the second mode MD2 are the same as the firstmode and the second mode described in the embodiment shown in FIG. 5 .

In the first mode MD1, the blocking part BK may be floated. However,this is an example and the state of the blocking part BK is not limitedthereto. For example, the blocking part BK may receive a ground voltagein the first mode MD1.

In the second mode MD2, a compensation voltage V1 may be provided to theblocking part BK. The compensation voltage V1 may have a valuesubstantially the same as the sensing signal.

The third mode MD3 may be a mode after the second mode MD2. The inputsensor IS may operate back in the first mode MD1 after the third modeMD3. The third mode MD3 may be a waiting mode on standby for the nextoperation, and the third mode MD3 may be omitted.

According to the embodiments, the blocking part BK may be disposed onthe plurality of sensing wirings TL1, TL2, and TL3. A sensing signalidentical to the plurality of first sensing electrodes TE1 and theplurality of second sensing electrodes TE2 may be provided to theplurality of sensing wirings TL1, TL2, and TL3. A compensation voltageV1 may be provided to the blocking part BK. The sensing signal and thecompensation voltage V1 may substantially have the same value.Accordingly, parasitic capacitance may not be generated between theblocking part BK and the plurality of sensing wirings TL1, TL2, and TL3.When the sensing pen PN (see FIG. 1 ) is sensed in the active area AA-I,signal distortion generated by the parasitic capacitance may beprevented. Accordingly, a display device EA (see FIG. 1 ) havingimproved sensing reliability in the active area AA-I may be provided.

FIG. 12 is a cross-sectional view of another embodiment of a portion ofthe input sensor taken along a line corresponding to I-I′ of FIG. 5 ,and FIG. 13 is a cross-sectional view of another embodiment of a portionof the input sensor taken along a line corresponding to II-II′ of FIG. 5. In describing FIGS. 12 and 13 , like reference numerals are applied tothe components described in FIGS. 6 and 7 , and a repetitive descriptionwill be omitted to avoid redundancy.

Referring to FIGS. 12 and 13 , a sensing circuit layer ML-T (see FIG.3B) may be disposed on the base insulating layer IS-IL0. The sensingcircuit layer ML-T (see FIG. 3B) may include a first conductive layerIS-CL1-1, a first insulating layer IS-IL1, a second conductive layerIS-CL2-1, and a second insulating layer IS-IL2. Specifically, referringto FIG. 12 , the first conductive layer IS-CL1-1 may include a pluralityof sensing patterns SP1-1 and SP2-1, and the second conductive layerIS-CL2-1 may include a plurality of bridge patterns BP1-1.

When viewed on a plan, the first conductive layer IS-CL1-1 may have amesh pattern.

Referring to FIG. 13 , the plurality of second sensing electrodes TE2-1and the plurality of third sensing wirings TL3 may be formed through thesame process to include the same material and have the same stackingstructure. The plurality of bridge patterns BP1-1 and a blocking partBK0 may be formed through the same process to include the same materialand have the same stacking structure.

According to the embodiments, the blocking part BK0 may be formedsimultaneously while a plurality of bridge patterns BP1-1 are formed.Accordingly, a display device EA (see FIG. 1 ) having a simplifiedprocess may be provided. In addition, the widths WD-BK1, WD-BK2, andWD-BK3 (see FIG. 5 ) of the plurality of sensing wirings TL1, TL2, andTL3 (see FIG. 5 ) are smaller than the width WD-BK0 of the blocking partBK0. When viewed on a plan, the blocking part BK0 may cover a pluralityof third sensing wirings TL3. The blocking part BK0 may block staticelectricity generated by the sensing pen PN (see FIG. 1 ). The blockingpart BK0 may prevent an electric field from being generated between thesensing pen PN (see FIG. 1 ) and the plurality of sensing wirings TL1,TL2, and TL3 (see FIG. 5 ). The blocking part BK0 may prevent jitterfrom being generated between the sensing pen PN (see FIG. 1 ) and theplurality of sensing wirings TL1, TL2, and TL3 (see FIG. 5 ). Theblocking part BK0 may prevent a signal transmitted through the pluralityof sensing wirings TL1, TL2, and TL3 (see FIG. 5 ) from being distortedby the sensing pen PN (see FIG. 1 ). Accordingly, a display device EA(see FIG. 1 ) having reduced noise may be provided, and a display deviceEA (see FIG. 1 ) having improved sensing reliability at the boundariesof the active area AA-I (see FIG. 5 ) and the peripheral area NAA-I (seeFIG. 5 ) may be provided.

FIG. 14 is a plan view of a fourth embodiment of an input sensor shownin FIG. 2 . In describing FIG. 14 , like reference numerals are appliedto the components described in FIG. 5 , and a repetitive descriptionwill be omitted to avoid redundancy.

Referring to FIG. 14 , a plurality of sensing wirings TL1-1 and TL2-1may be disposed in the peripheral area NAA-I. The plurality of sensingwirings TL1-1 and TL2-1 may include a plurality of first sensing wiringsTL1-1 and a plurality of second sensing wirings TL2-1.

A blocking part BK-3 may be disposed on the plurality of sensing wiringsTL1-1 and TL2-1. The blocking part BK-3 may cover the plurality ofsensing wirings TL1-1 and TL2-1.

The plurality of first sensing wirings TL1-1 may be connected to one endof the plurality of first sensing electrodes TE1, respectively. Theplurality of second sensing wirings TL2-1 may be connected to one end ofthe plurality of second sensing electrodes TE2, respectively.

The plurality of sensing wirings TL1-1 and TL2-1 may not be disposed inthe peripheral area NAA-I facing the other end of the plurality of firstsensing electrodes TE1 and the other end of the plurality of secondsensing electrodes TE2. Accordingly, an input sensor IS-3 may provide adisplay device EA (see FIG. 1 ) having a reduced area of the peripheralarea NAA-I.

According to the embodiments, a blocking part may be disposed on aplurality of sensing wirings. The blocking part may prevent an electricfield from being generated between a sensing pen and the plurality ofsensing wirings. The blocking part may prevent a signal transmittedthrough the plurality of sensing wirings from being distorted by thesensing pen. Therefore, a display device having improved sensingreliability may be provided.

Although certain embodiments and implementations have been describedherein, other embodiments and modifications will be apparent from thisdescription. Accordingly, the inventive concepts are not limited to suchembodiments, but rather to the broader scope of the appended claims andvarious obvious modifications and equivalent arrangements as would beapparent to a person of ordinary skill in the art.

What is claimed is:
 1. A display device comprising: a display panel; andan input sensor disposed on the display panel, wherein the input sensorcomprises: a plurality of sensing electrodes; a plurality of sensingwirings electrically connected to the plurality of sensing electrodes,respectively; and a conductive part covering the plurality of sensingwirings, wherein the conductive part is configured to be floated or toreceive a substantially constant voltage, and wherein the conductivepart has a single, contiguous shape.
 2. The display device of claim 1,wherein the conductive part comprises a shielding layer having a meshpattern.
 3. The display device of claim 1, wherein: a plurality ofopenings are defined in the conductive part; and the plurality ofopenings are spaced apart in a first direction, and the plurality ofopenings extend in a second direction intersecting the first direction,respectively.
 4. The display device of claim 3, wherein each of theplurality of openings has a width greater than a width of each of theplurality of sensing wirings.
 5. The display device of claim 1, furthercomprising a controller to receive a signal from the input sensor and toremove the signal when the signal has a shape different from a shape ofa Gaussian distribution.
 6. The display device of claim 1, wherein thesubstantially constant voltage is a ground voltage.
 7. The displaydevice of claim 1, wherein the substantially constant voltage issubstantially the same as a voltage provided to the plurality of sensingelectrodes.
 8. The display device of claim 1, wherein in the secondmode, the plurality of sensing wirings and the conductive part areconfigured to receive substantially the same voltage.
 9. The displaydevice of claim 1, wherein: the plurality of sensing electrodes comprisea plurality of sensing patterns and a bridge pattern disposed on a layerdifferent from the plurality of sensing patterns; and the plurality ofsensing wirings are disposed on the same layer as any one of theplurality of sensing patterns or the bridge pattern, and the conductivepart is disposed on the same layer as the other of the plurality ofsensing patterns or the bridge pattern.
 10. The display device of claim1, wherein the plurality of sensing electrodes comprises a plurality offirst sensing electrodes and a plurality of second sensing electrodes,wherein input sensor operates in a first mode and a second modedifferent from the first mode, wherein in the first mode, the pluralityof first sensing electrodes is configured to output sensing signals andthe plurality of second sensing electrodes is configured to receivedriving signals, and in the second mode, the plurality of first andsecond sensing electrodes are configured to receive the samesubstantially constant voltage.
 11. The display device of claim 1,wherein the conductive part has a width in a first direction greaterthan a width of a wiring region in the first direction where theplurality of sensing wirings extending in a second directionintersecting the first direction is disposed.
 12. The display device ofclaim 11, wherein an area of the conductive part is larger than an areaof the wiring region.
 13. A display device comprising: a display panel;a plurality of sensing electrodes disposed on the display panel; aplurality of sensing wirings electrically connected to the plurality ofsensing electrodes, respectively; and a conductive part disposed on theplurality of sensing wirings and having a width in a first directiongreater than a width of a wiring region in the first direction where theplurality of sensing wirings is disposed, wherein the plurality ofsensing electrodes comprises a sensing pattern and a bridge patterndisposed on a different layer from the sensing pattern, the plurality ofsensing wirings is disposed on the same layer as the bridge pattern, andthe conductive part is disposed on the same layer as the sensingpattern.
 14. The display device of claim 13, wherein the conductive parthas a single, contiguous shape and covers the plurality of sensingwirings.
 15. The display device of claim 13, wherein the single,contiguous conductive part is configured to be floated or to receive aground voltage.
 16. The display device of claim 13, wherein theconductive part is configured to operate in a first state or a secondstate different from the first state, wherein the first state is a statein which the conductive part is configured to be floated or to receive aground voltage, and the second state is a state in which the conductivepart is configured to receive the same voltage as that applied to theplurality of sensing wirings.
 17. The display device of claim 14,wherein the single, contiguous conductive part comprises a shieldinglayer having has a mesh pattern.
 18. The display device of claim 14,wherein: a plurality of openings is formed in the single, contiguousconductive part; the plurality of openings is spaced apart in a firstdirection, and the plurality of openings each extend in a seconddirection intersecting the first direction; and each of the plurality ofopenings has a width greater than a width of each of the plurality ofsensing wirings.